Mesoscopic fluctuations of the ground-state spin of a small metal particle
- 15 November 1999
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 60 (20) , R13977-R13980
- https://doi.org/10.1103/physrevb.60.r13977
Abstract
We study the statistical distribution of the ground-state spin for an ensemble of small metallic grains, using a random-matrix toy model. Using the Hartree-Fock approximation, we find that for interaction strengths well below the Stoner criterion there is already an appreciable probability that the ground state has a spin other than zero or one half. Possible relations to experiments are discussed.Keywords
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